Nazhi Robot: How to deal with the failure of the arc welding robot

Create Date: 2024-8-30 12:03:23|Source: NACHI / Nachi Fujikoshi

1. Some phenomena generally presented by welding robot welding
Nazhi Robot: How to deal with the failure of the arc welding robot

Our common robot welding generally uses carbon dioxide gas maintenance welding, and the welding defects presented in the welding process generally include welding deviation, undercut, porosity, etc., the specific analysis is as follows:

(1) The welding deviation may be due to the incorrect orientation of the welding or the problem of finding the welding gun. In this case, it is necessary to consider whether the TCP (torch center point bearing) is accurate and adjust it. If this situation is frequently presented, it is necessary to check the zero orientation of each axis of the robot and correct it from the beginning.

(2) The undercut may be due to the improper selection of welding parameters, the angle of the welding gun or the orientation of the welding gun, and the welding parameters can be changed by appropriately adjusting the size of the power, and the attitude of the welding gun and the relative orientation of the welding gun and the workpiece can be adjusted.

(3) The porosity may be poor gas maintenance, the primer of the workpiece is too thick, or the maintenance gas cannot be dried, and it can be dealt with with accordingly.

(4) Too much spatter may be due to improper selection of welding parameters, gas composition or too long extension of the welding wire, you can properly adjust the size of the power to change the welding parameters, adjust the gas ratio instrument to adjust the gas mixture share, adjust the relative orientation of the welding gun and the workpiece.

(5) After cooling at the end of the weld, an arc pit is formed, and the function of submerged arc pit is added to the operation step during programming to fill it.

Second, common problems of welding robots

(1) Produce a collision gun. It may be due to deviations in the assembly of the workpiece or inaccurate TCP of the welding gun, you can check the installation status or correct the TCP of the welding gun.

(2) Arc problem is presented, and the arc cannot be triggered. It may be because the wire is not in contact with the workpiece or the process parameters are too small, the wire can be fed manually, the distance between the welding gun and the weld can be adjusted, and the process parameters may be adjusted appropriately.

(3) Maintenance gas monitoring alarm. If there is a problem with the cooling water or maintenance gas supply, check the cooling water or maintenance air line.

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